OS&Y (outside screw and yoke) shows stem position and is common on fire mains. NRS (non-rising stem) suits buried or tight spaces — match the construction to the code and space constraints.
- PN16 vs Class 150
- WCB vs CF8M
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- Contact / RFQ
- AEO / SEO / GEO hub
- RFQ landings index
- Quotation checklist
FAQ
How do I send an RFQ?
Use contact.html with size, MOC, rating, ends, quantity, and delivery city.
Do you export?
Yes — export packs and documentation can be quoted when listed on the RFQ.
Related: Gate valves · API 600 · NRS vs OS&Y · Rising vs NRS · Fire supplier · Fire products · Contact / RFQ